Nicolas Petit (University of Liege) and Norman Neyrinck (Uinversity of Liege) have written on Back to Microsoft I and II: Tying and the Art of Secret Magic.

ABSTRACT: For the authors, the Microsoft I and II cases are not tying cases, but rather disguised refusal-to-supply cases. As there was no clear evidence of coercion in both cases, the Commission plugged the hole with behavioural economics—but did so, for the authors, unconvincingly. The outcome of the two cases demonstrate that the remedies proposed by the Commission did not address the harm which was supposedly created.